+noans.dvi: $(SOURCES)
+ @if [ ! -d noans ]; then \
+ mkdir noans; \
+ for i in $(SOURCES); do ln -s ../$$i noans; done; \
+ echo '\ipsanswersfalse' >noans/ips.cfg; \
+ fi
+ cd noans && \
+ latex ips && bibtex ips && \
+ latex ips && latex ips && \
+ cp ips.dvi ../noans.dvi
+noans.pdf: noans.dvi
+ cd noans && pdflatex ips.tex && cp ips.pdf ../noans.pdf
+noans.ps: noans.dvi
+ dvips -o noans.ps noans.dvi
+